Online relationships have a false sense of intimacy. What might take months or years for you and I to develop a close relationship in real life may only take days or weeks online. If your wife continues to engage in this intimate relationship with another man I think you do have to question her commitment to your marriage and family. There are no easy answers. This is a type of infidelity. She needs to recognize that if it does bother you and impact the amount of time and emotional energy she is able to devote to you and your family than something is wrong with the situation and this type of behavior. Video games may seem like a virtual fantasy world but a real person is taking time from your marriage and capturing her attention. Befriending someone online is certainly a fine line but from what you have described it has lead to an emotional affair that takes away from emotions that she is able to share with you and your children. Her game time alone suggests that she is obsessed enough with the game that she is neglecting your family. Gaming addiction can happen to anyone. On some level she needs to make a choice. How important is the game compared to the well being of your family and marriage? Having an addict realize the extent of damage caused by the addiction is a difficult process. Denial is often great and more consequences are necessary to wake this up to the reality of their behavior. There may be other problems she is experiencing such as depression or anxiety and she is using the game as an outlet for these issues. Recognizing the addiction and finding a good therapist for her that she can work through these issues in an important first step.